/Engine/Plugins/MovieScene/MovieRenderPipeline/Source/MovieRenderPipelineCore/Public/Graph/MoviePipelineRenderLayerSubsystem.h
Adds a render layer to the system, which can later be made active by SetActiveRenderLayer*(). Returns true if the layer was added successfully, else false.
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category="Render Layers") bool AddRenderLayer ( [UMoviePipelineRenderLayer](API\Plugins\MovieRenderPipelineCore\Graph\UMoviePipelineRenderLayer) * RenderLayer )